n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 5 |
3 | 13 |
4 | 40 |
5 | 134 |
6 | 467 |
7 | 1681 |
8 | 6230 |
9 | 23698 |
10 | 91781 |
11 | 361474 |
12 | 1444421 |
13 | 5838953 |
14 | 23855627 |
15 | 98385021 |
16 | 409057415 |
17 | 1713260510 |
18 | 7223645090 |
19 | 30637979060 |
20 | 130649823315 |
21 | 559905201444 |
22 | 2410332888720 |
23 | 10419393878406 |
24 | 45214717684925 |
25 | 196904962166692 |
26 | 860326758933089 |
27 | 3770559907597927 |
28 | 16572613244060271 |
[1,2,5,13,40,134,467,1681,6230,23698,91781,361474, 1444421,5838953,23855627,98385021,409057415, 1713260510,7223645090,30637979060,130649823315, 559905201444,2410332888720,10419393878406, 45214717684925,196904962166692,860326758933089, 3770559907597927,16572613244060271] |